Overview
The Allen-Bradley 42GNC-9200-QD1 is a photoelectric sensor from Rockwell Automation’s Photoswitch Series 9000 line. This clear object photoswitch delivers straightforward on/off control for industrial automation, motion control, and material handling applications where accurate object detection is essential. The compact sensor integrates a quick-disconnect (QD) connector for simplified installation and field replacement.
Key Features
- Clear object detection mode optimized for transparent and translucent materials
- 4-pin mini-integral quick-disconnect (QD) connector for fast, tool-free field installation
- Solid-state photoelectric sensing with no moving parts—high reliability and long service life
- Configurable light/dark logic and selectable sensing modes via onboard controls
- Compact industrial-grade housing rated for factory floor environments
Technical Specifications
- Model: 42GNC-9200-QD1
- Series: Photoswitch Series 9000
- Supply Voltage: 10–40 VDC
- Output Type: NPN/PNP transistor (selectable)
- Connector: 4-pin mini integral quick-disconnect (QD)
- Detection Mode: Clear object / timing photoelectric
- Output Current: 200 mA (typical)
- Operating Temperature: 0°C to 50°C (32°F to 122°F)
- Housing Material: Polycarbonate
- Weight: ~0.45 lbs
- Certifications: UL, CSA listed
Typical Applications
- Detecting clear or translucent plastic film, bottles, and containers on production lines
- Web edge detection and registration in converting equipment
- Presence verification in automated assembly and packaging machinery
- Count and spacing logic in high-speed material handling conveyors
- Machine safeguarding and position confirmation in industrial automation systems
Compatibility & Replacements
Compatible With
- Allen-Bradley ControlLogix and CompactLogix PLC systems via standard I/O modules
- Siemens S7-1200, S7-1500, and other DC-input industrial controllers
- Omron, Mitsubishi, and third-party PLCs with 10–40 VDC sensor input terminals
- Standard industrial sensor wiring and 4-pin QD connector ecosystems
Replaces / Drop-In Replacement For
- 42GNC-9200-QD (cable version without integral QD)
- Earlier Allen-Bradley photoswitch Series 2000 and Series 5000 clear object models (verify pinout)
Works With
- Studio 5000 Logix Designer / RSLogix 5000 (as discrete I/O input)
- Standard 24 VDC/10–40 VDC industrial control circuits
- Ethernet/IP and DeviceNet networks (when integrated via gateway or I/O scanner)
- Pneumatic and hydraulic control systems with electrical sensor feedback


















